Granted Patent
Utility
US 5,486,915 · App. 08/226,801
On-line measurement of lignin in wood pulp by color shift of fluorescence
Inventors:
Larry A. Jeffers, Michael L. Malito
Patented Case
View Patent ↗
Granted: Jan 23, 1996
Filed: Apr 12, 1994
Inventors
Larry A. Jeffers
Michael L. Malito
Assignee (at issue)
The Babcock & Wilcox Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.